Refactoring, right-align users and fix join/leave messages

matrix.go

@@ -121,18 +121,19 @@ func (c *MatrixContainer) UpdateRoomList() {
 
 func (c *MatrixContainer) Start() {
 	defer c.gmx.Recover()
-	c.debug.Print("Starting sync...")
-	c.running = true
-	c.ui.SetView(ViewMain)
 	c.client.Store = c.config.Session
 
-	c.UpdateRoomList()
+	syncer := gomatrix.NewDefaultSyncer(c.config.Session.MXID, c.config.Session)
-
-	syncer := c.client.Syncer.(*gomatrix.DefaultSyncer)
 	syncer.OnEventType("m.room.message", c.HandleMessage)
 	syncer.OnEventType("m.room.member", c.HandleMembership)
 	syncer.OnEventType("m.typing", c.HandleTyping)
+	c.client.Syncer = syncer
 
+	c.UpdateRoomList()
+
+	c.debug.Print("Starting sync...")
+	c.running = true
+	c.ui.SetView(ViewMain)
 	for {
 		select {
 		case <-c.stop:
@@ -152,17 +153,23 @@ func (c *MatrixContainer) Start() {
 func (c *MatrixContainer) HandleMessage(evt *gomatrix.Event) {
 	message, _ := evt.Content["body"].(string)
 
-	timestamp := time.Now()
+	room := c.ui.MainView().GetRoom(evt.RoomID)
-	if evt.Timestamp != 0 {
+	if room != nil {
-		timestamp = time.Unix(evt.Timestamp/1000, evt.Timestamp%1000*1000)
+		room.AddMessage(evt.ID, evt.Sender, message, unixToTime(evt.Timestamp))
 	}
+}
 
-	c.ui.MainView().AddRealMessage(evt.RoomID, evt.ID, evt.Sender, message, timestamp)
+func unixToTime(unix int64) time.Time {
+	timestamp := time.Now()
+	if unix != 0 {
+		timestamp = time.Unix(unix/1000, unix%1000*1000)
+	}
+	return timestamp
 }
 
 func (c *MatrixContainer) HandleMembership(evt *gomatrix.Event) {
+	membership, _ := evt.Content["membership"].(string)
 	if evt.StateKey != nil && *evt.StateKey == c.config.Session.MXID {
-		membership, _ := evt.Content["membership"].(string)
 		prevMembership := "leave"
 		if evt.Unsigned.PrevContent != nil {
 			prevMembership, _ = evt.Unsigned.PrevContent["membership"].(string)
@@ -175,6 +182,34 @@ func (c *MatrixContainer) HandleMembership(evt *gomatrix.Event) {
 		} else if membership == "leave" {
 			c.ui.MainView().RemoveRoom(evt.RoomID)
 		}
+		return
+	}
+	room := c.ui.MainView().GetRoom(evt.RoomID)
+
+	// TODO this shouldn't be necessary
+	room.room.UpdateState(evt)
+
+	if room != nil {
+		var message, sender string
+		if membership == "invite" {
+			sender = "---"
+			message = fmt.Sprintf("%s invited %s.", evt.Sender, *evt.StateKey)
+		} else if membership == "join" {
+			sender = "-->"
+			message = fmt.Sprintf("%s joined the room.", *evt.StateKey)
+		} else if membership == "leave" {
+			sender = "<--"
+			if evt.Sender != *evt.StateKey {
+				reason, _ := evt.Content["reason"].(string)
+				message = fmt.Sprintf("%s kicked %s: %s", evt.Sender, *evt.StateKey, reason)
+			} else {
+				message = fmt.Sprintf("%s left the room.", *evt.StateKey)
+			}
+		} else {
+			return
+		}
+		room.UpdateUserList()
+		room.AddMessage(evt.ID, sender, message, unixToTime(evt.Timestamp))
 	}
 }
 
@@ -240,8 +275,8 @@ func (c *MatrixContainer) getState(roomID string) []*gomatrix.Event {
 }
 
 func (c *MatrixContainer) GetRoom(roomID string) *gomatrix.Room {
-	room := c.client.Store.LoadRoom(roomID)
+	room := c.config.Session.LoadRoom(roomID)
-	if len(room.State) == 0 {
+	if room != nil && len(room.State) == 0 {
 		events := c.getState(room.ID)
 		if events != nil {
 			for _, event := range events {

message-view.go

@@ -93,11 +93,9 @@ type MessageView struct {
 	totalHeight         int
 
 	messages []*Message
-
-	debug DebugPrinter
 }
 
-func NewMessageView(debug DebugPrinter) *MessageView {
+func NewMessageView() *MessageView {
 	return &MessageView{
 		Box:             tview.NewBox(),
 		MaxSenderWidth:  20,
@@ -113,8 +111,6 @@ func NewMessageView(debug DebugPrinter) *MessageView {
 		firstDisplayMessage: -1,
 		lastDisplayMessage:  -1,
 		totalHeight:         -1,
-
-		debug: debug,
 	}
 }
 
@@ -207,6 +203,24 @@ func (view *MessageView) writeLine(screen tcell.Screen, line string, x, y int, c
 	}
 }
 
+func (view *MessageView) writeLineRight(screen tcell.Screen, line string, x, y, maxWidth int, color tcell.Color) {
+	offsetX := maxWidth - runewidth.StringWidth(line)
+	if offsetX < 0 {
+		offsetX = 0
+	}
+	for _, ch := range line {
+		chWidth := runewidth.RuneWidth(ch)
+		if chWidth == 0 {
+			continue
+		}
+
+		for localOffset := 0; localOffset < chWidth; localOffset++ {
+			screen.SetContent(x+offsetX+localOffset, y, ch, nil, tcell.StyleDefault.Foreground(color))
+		}
+		offsetX += chWidth
+	}
+}
+
 const (
 	TimestampSenderGap = 1
 	SenderSeparatorGap = 1
@@ -246,7 +260,9 @@ func (view *MessageView) Draw(screen tcell.Screen) {
 		}
 		view.writeLine(screen, message.Timestamp, x, senderAtLine, tcell.ColorDefault)
 		if message.RenderSender || i == view.lastDisplayMessage {
-			view.writeLine(screen, message.Sender, x+usernameOffsetX, senderAtLine, message.senderColor)
+			view.writeLineRight(screen, message.Sender,
+				x+usernameOffsetX, senderAtLine,
+				view.widestSender, message.senderColor)
 		}
 
 		for num, line := range message.buffer {

room-view.go

@@ -21,6 +21,7 @@ import (
 	"hash/fnv"
 	"sort"
 	"strings"
+	"time"
 
 	"github.com/gdamore/tcell"
 	"maunium.net/go/gomatrix"
@@ -36,7 +37,7 @@ type RoomView struct {
 	userList *tview.TextView
 	room     *gomatrix.Room
 
-	debug DebugPrinter
+	parent *MainView
 }
 
 var colorNames []string
@@ -51,15 +52,15 @@ func init() {
 	sort.Sort(sort.StringSlice(colorNames))
 }
 
-func NewRoomView(debug DebugPrinter, room *gomatrix.Room) *RoomView {
+func NewRoomView(parent *MainView, room *gomatrix.Room) *RoomView {
 	view := &RoomView{
 		Box:      tview.NewBox(),
 		topic:    tview.NewTextView(),
-		content:  NewMessageView(debug),
+		content:  NewMessageView(),
 		status:   tview.NewTextView(),
 		userList: tview.NewTextView(),
 		room:     room,
-		debug:    debug,
+		parent:   parent,
 	}
 	view.topic.
 		SetText(strings.Replace(room.GetTopic(), "\n", " ", -1)).
@@ -108,20 +109,38 @@ func (view *RoomView) SetTyping(users []string) {
 	}
 }
 
+func (view *RoomView) AutocompleteUser(existingText string) (completions []string) {
+	for _, user := range view.room.GetMembers() {
+		if strings.HasPrefix(user.DisplayName, existingText) {
+			completions = append(completions, user.DisplayName)
+		} else if strings.HasPrefix(user.UserID, existingText) {
+			completions = append(completions, user.UserID)
+		}
+	}
+	return
+}
+
 func (view *RoomView) MessageView() *MessageView {
 	return view.content
 }
 
 func getColorName(s string) string {
-	h := fnv.New32a()
+	switch s {
-	h.Write([]byte(s))
+	case "-->":
-	return colorNames[int(h.Sum32())%len(colorNames)]
+		return "green"
+	case "<--":
+		return "red"
+	case "---":
+		return "yellow"
+	default:
+		h := fnv.New32a()
+		h.Write([]byte(s))
+		return colorNames[int(h.Sum32())%len(colorNames)]
+	}
 }
 
 func getColor(s string) tcell.Color {
-	h := fnv.New32a()
+	return tcell.ColorNames[getColorName(s)]
-	h.Write([]byte(s))
-	return tcell.ColorNames[colorNames[int(h.Sum32())%len(colorNames)]]
 }
 
 func color(s string) string {
@@ -129,12 +148,29 @@ func color(s string) string {
 }
 
 func (view *RoomView) UpdateUserList() {
-	var buf strings.Builder
+	var joined strings.Builder
+	var invited strings.Builder
 	for _, user := range view.room.GetMembers() {
 		if user.Membership == "join" {
-			buf.WriteString(color(user.DisplayName))
+			joined.WriteString(color(user.DisplayName))
-			buf.WriteRune('\n')
+			joined.WriteRune('\n')
+		} else if user.Membership == "invite" {
+			invited.WriteString(color(user.DisplayName))
+			invited.WriteRune('\n')
 		}
 	}
-	view.userList.SetText(buf.String())
+	view.userList.Clear()
+	fmt.Fprintf(view.userList, "%s\n", joined.String())
+	if invited.Len() > 0 {
+		fmt.Fprintf(view.userList, "\nInvited:\n%s", invited.String())
+	}
+}
+
+func (view *RoomView) AddMessage(id, sender, message string, timestamp time.Time) {
+	member := view.room.GetMember(sender)
+	if member != nil {
+		sender = member.DisplayName
+	}
+	view.content.AddMessage(id, sender, message, timestamp)
+	view.parent.Render()
 }

session.go

@@ -86,8 +86,8 @@ func (s *Session) LoadNextBatch(_ string) string {
 }
 
 func (s *Session) LoadRoom(mxid string) *gomatrix.Room {
-	room, ok := s.Rooms[mxid]
+	room, _ := s.Rooms[mxid]
-	if !ok || room == nil {
+	if room == nil {
 		room = gomatrix.NewRoom(mxid)
 		s.SaveRoom(room)
 	}

view-main.go

@@ -111,15 +111,8 @@ func findWordToTabComplete(text string) string {
 	return output
 }
 
-func (view *RoomView) AutocompleteUser(existingText string) (completions []string) {
+func (view *MainView) GetRoom(id string) *RoomView {
-	for _, user := range view.room.GetMembers() {
+	return view.rooms[id]
-		if strings.HasPrefix(user.DisplayName, existingText) {
-			completions = append(completions, user.DisplayName)
-		} else if strings.HasPrefix(user.UserID, existingText) {
-			completions = append(completions, user.UserID)
-		}
-	}
-	return
 }
 
 func (view *MainView) InputTabComplete(text string, cursorOffset int) string {
@@ -231,7 +224,7 @@ func (view *MainView) addRoom(index int, room string) {
 		view.SwitchRoom(index)
 	})
 	if !view.roomView.HasPage(room) {
-		roomView := NewRoomView(view.debug, roomStore)
+		roomView := NewRoomView(view, roomStore)
 		view.rooms[room] = roomView
 		view.roomView.AddPage(room, roomView, true, false)
 		roomView.UpdateUserList()
@@ -285,17 +278,13 @@ func (view *MainView) SetTyping(room string, users []string) {
 }
 
 func (view *MainView) AddMessage(room, message string) {
-	view.AddRealMessage(room, "", "*", message, time.Now())
-}
-
-func (view *MainView) AddRealMessage(room, id, sender, message string, timestamp time.Time) {
 	roomView, ok := view.rooms[room]
 	if ok {
-		member := roomView.room.GetMember(sender)
+		roomView.content.AddMessage("", "*", message, time.Now())
-		if member != nil {
-			sender = member.DisplayName
-		}
-		roomView.content.AddMessage(id, sender, message, timestamp)
 		view.parent.Render()
 	}
 }
+
+func (view *MainView) Render() {
+	view.parent.Render()
+}